Simplify: 8^2 + 9(12 / 3*2) -7 , don't solve it, i need it to be simplified!

is the slash supposed to be division or a fraction?

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c